2001 World Championships in Athletics – Women's 400 metres hurdles
These are the official results of the Women's 400 metres Hurdles event at the 2001 IAAF World Championships in Edmonton, Alberta, Canada.
Medalists
Results
Heats
Qualification: First 3 in each heat and the next 4 fastest advanced to the [|semifinals].| Rank | Heat | Name | Nationality | Time | Notes |
| 2 | Yuliya Nosova | 54.43 | Q | ||
| 1 | Nezha Bidouane | 54.55 | Q | ||
| 1 | Debbie-Ann Parris | 54.81 | Q | ||
| 2 | Tonja Buford-Bailey | 54.99 | Q | ||
| 3 | Sandra Glover | 55.38 | Q | ||
| 4 | Deon Hemmings | 55.39 | Q | ||
| 3 | Daimi Pernia | 55.40 | Q | ||
| 2 | Ionela Tirlea | 55.41 | Q | ||
| 1 | Małgorzata Pskit | 55.45 | Q | ||
| 10 | 1 | Yvonne Harrison | 55.63 | q, NR | |
| 11 | 1 | Natalya Torshina | 55.69 | q | |
| 12 | 3 | Monika Niederstatter | 55.83 | Q, SB | |
| 13 | 1 | Karlene Haughton | 55.94 | q, SB | |
| 14 | 2 | Anna Olichwierczuk | 55.98 | q | |
| 15 | 4 | Sinead Dudgeon | 56.07 | Q, SB | |
| 16 | 4 | Brenda Taylor | 56.28 | Q | |
| 17 | 2 | Mame Tacko Diouf | 56.44 | SB | |
| 18 | 4 | Heike Meissner | 56.79 | ||
| 19 | 3 | Surita Febbraio | 56.80 | ||
| 20 | 2 | Sylvanie Morandais | 56.85 | ||
| 21 | 3 | Melaine Walker | 57.10 | ||
| 21 | 4 | Andrea Blackett | 57.10 | ||
| 23 | 2 | Keri Maddox | 57.55 | ||
| 24 | 4 | Noraseela Khalid | 59.12 | ||
| 4 | Tetyana Tereshchuk-Antipova |
Semifinals
Qualification: First 4 in each semifinal qualified directly for the [|final].| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | Daimi Pernia | 53.81 | Q, WL | ||
| 1 | Nezha Bidouane | 53.85 | Q, SB | ||
| 1 | Debbie-Ann Parris | 53.88 | Q, PB | ||
| 2 | Yuliya Nosova | 54.03 | Q | ||
| 2 | Tonja Buford-Bailey | 54.15 | Q, SB | ||
| 2 | Deon Hemmings | 54.47 | Q, SB | ||
| 2 | Ionela Tirlea | 54.92 | Q | ||
| 1 | Sandra Glover | 55.04 | Q, SB | ||
| 1 | Małgorzata Pskit | 55.28 | |||
| 10 | 2 | Anna Olichwierczuk | 55.64 | ||
| 11 | 1 | Karlene Haughton | 55.68 | SB | |
| 12 | 1 | Monika Niederstatter | 56.37 | ||
| 13 | 1 | Natalya Torshina | 56.45 | ||
| 14 | 2 | Brenda Taylor | 56.52 | ||
| 15 | 2 | Yvonne Harrison | 56.70 | ||
| 16 | 2 | Sinead Dudgeon | 56.92 |